Hitachi, Ltd.

Hitachi Communication Technologies, Ltd.

Masayuki Takase

Yoshihiro Ashi

Hideki Endo

Takayuki Kanno

Masahiko Mizutani

Nobuyuki Yamamoto

Tohru Kazawa

Kenichi Sakamoto

Akihiko Tanaka

Taisuke Ueta

Atsushi Iwamura

Takaaki Suzuki

Takeshi Shibata

Norihiko Moriwaki

Masanobu Kobayashi

Ryosuke Nishino

Kenji Fujihira

Mikio Kuwahara

Yusuke Yajima

Takeki Yazaki

Tetsuya Uda

Hidehiro Toyoda

Nodoka Mimura

Akihiko Tsuchiya

Tomoyuki Iijima

Junnosuke Wakai

Yuji Oishi

Hayato Hoshihara

Kazuhisa Fujimoto

Masahiro Kimura

Takahiko Kozaki

Shiro Mazawa

Kunihiko Toumura

Shigenori Hayase

Satoru Ishikawa

Kazuhiro Watanabe

Kazuhiro Kusama

Koji Fukuda

Yasunari Shinohara

Norihiro Sakamoto

Jun Sugawa

Minoru Hidaka

Daisuke Mashimo

Mitsuhiro Wada

Tomoyuki Oku

Taishi Shinagawa

Hiroaki Kasahara

Shikou Matsushima

Joe Ogasawara

Kantaro Miyake

Akihiro Ohnuma

Dai Akashi

Ryousuke Nishino

It is provided a network system that transfers data, the network system comprising: a first network; a second network connected with the first network and to which a server is connected; a third network connected with the first network and in which a terminal is accommodated; a terminal identification device, wherein the terminal identification device is configured to hold terminal identification information in which the address information of the gateway device in the first network, an identifier of the terminal, and the connection availability of the terminal to the second network are associated with each other, determine the connection availability of the terminal to the second network based on the terminal identification information, and acquire the address information of the gateway device in the first network and the identifier of the terminal from the gateway device to register or update the terminal identification information.

Network system, communication control device, and communication control method

A management apparatus specifies a first communication path requirement template corresponding to a first communication path requirement of a first application module and a second communication path requirement template corresponding to a second communication path requirement of a second application module, determines the available communication module included in the first communication path requirement template to be a first communication module and determines the available communication module included in the second communication path requirement template to be a second communication module, determines an arrangement destination of the first communication module to be a first arrangement destination, and determines an arrangement destination of the second communication module to be a second arrangement destination, and sets a communication path by arranging the first application module and the first communication module in the first arrangement destination and arranging the second application module and the second communication module in the second arrangement destination.

Management apparatus, management system, and management method

A network system comprises a communication facility, and a management apparatus. The communication facility includes a wireless base station, a data processing apparatus, and communication processing apparatuses. The management apparatus manages resource management information for managing, as a resource, a value of an item to be set for the communication facility to generate a network slice for each of characteristics of the network slice. The management apparatus generates the network slice, refers, based on a characteristic of the network slice, to the resource management information to determine the value of the item and transmits, to the communication facility, first setting information for setting the determined value of the item. The management apparatus generates a transfer rule by associating identification information on a wireless terminal and identification information on the data processing apparatus with each other and transmits, to the communication facility, second setting information for setting the transfer rule.

Network system and network slice generation method

A routing device and an unauthorized communication coping device are provided. The routing device is a device that performs routing of a packet in conformance with a wireless communication protocol in a wireless communication section which is a communication section that connects a base station and a core network device, and the routing device performs network tapping on a packet as a routing target and transmits the network-tapped packet to the unauthorized communication detection device (the device that performs unauthorized communication determination which is determination of whether or not communication is unauthorized communication based on a packet). The unauthorized communication coping device performs, for unauthorized communication which is communication for which a result of the unauthorized communication determination based on the network-tapped packet is true, unauthorized communication coping including configuring communication control information which is information for controlling the unauthorized communication for at least one of the routing device and the core network device.

Unauthorized-communication coping system and unauthorized-communication coping method

A mobile-side IP address is translated into an intranet-side MAC address, and an IP address for an intranet is acquired. The present invention provides a network system for transferring a packet, including: a first network that controls transfer of data at a first layer; a second network that is connected to the first network and controls transfer of data at a second layer different from the first layer; and a translation device that translates an address between networks, in which the translation device translates the address of the first layer of the first network attached to data transferred from the first network to the second network into the address of the second layer of the second network.

Constructed is a network management system which manages, in an integrated manner, a first communication system, a second communication system and a third communication system passed through by packets that are sent and received via wireless communication between a first device and a second device. The network management system performs information setting to these communication systems for dividing a communication system group, which includes these communication systems, into a plurality of logical partitions each corresponding to a plurality of different service levels based on the management information of each of these communication systems. A logical partition corresponding to a service level with regard to each of the plurality of different service levels is a partition passed through by packets that are sent and received via wireless communication between the first device and the second device belonging to that service level.

Network management system and method

From among a U-plane and a C-plane, the U-plane is installed in a first user site which has a base station, and the C-plane is installed in a C-plane site (any site that is not a user site). A system sets a U-plane inter-site path which is an inter-site communication path that connects a first user site with a second user site via a wide area network, and a C-plane inter-site path which is an inter-site communication path that connects a C-plane site with the first user site via the wide area network. In addition, the system sets an in-site communication path which is a communication path within the first user site and which connects to an inter-site communication path. A U-plane inter-site path is an inter-site communication path via which data is transmitted or received by a U-plane. A C-plane inter-site path is an inter-site communication path via which a signal is transmitted or received by a C-plane.

Communication support system and method

To enable a communication apparatus, which transmits and receives data with a partially reconfigurable logic circuit, to configure a module while continuing a communication process. A communication apparatus transmits and receives data and includes a partially reconfigurable logic circuit and a management unit for managing a circuit configuration of the logic circuit. The logic circuit includes a plurality of modules and a data distribution unit. The management unit fixedly arranges a plurality of coupling interfaces, which are used for sending data to a module determined as a distribution destination of data by the data distribution unit and which are respectively linkable to the plurality of modules, at prescribed positions on the logic circuit, and creates the module in the partially reconfigurable area of the logic circuit so as to be linked to any of the plurality of coupling interfaces.

Communication apparatus, communication system, and circuit configuration control method

A communication device includes a plurality of packet processing modules in which a packet processing function is changeable with a program, and a management server holds program information of a plurality of different packet processing module circuits settable to the packet processing modules, selects the packet processing module circuit to be set to the packet processing module, of the plurality of different packet processing module circuits, and transmits the program information of the selected packet processing module circuit and information for identifying the packet processing module that is an object to be set, to the communication device that is an object to be set.

Network system and management server

When a communication path between a user site and a dual-homed data center is made redundant, a communication between the user site and a server within a data center can be continued. An edge node DCE-1 of a data center-and edge nodes TPE-1, TPE-2 of a transport network are connected to each other by a link TPE-1-1 and a link TPE-2-1, respectively. The edge nodes TPE-3 and TPE-1, TPE-2 that hold a node AEof a user siteare set with an LSPof an active system, and an LSPof a backup system, respectively. One of the links is active, and the other link is backup, and the LSP of the TPE node having the active link in the LSPand the LSPis made active. The respective links are prioritized, and the links are switched to an active state in order from the links higher in the order of priority when a link failure or an LSP failure occurs.

Communication system, path switching method and communication device

In an exemplary communication apparatus, an assignment module determines whether processing for a second packet assigned the flow ID associated with a received first packet is being executed. The assignment module determines a parallel processing module to execute processing for the first packet and a parameter to be included in a notice of assignment. The determined parallel processing module acquires a result of execution of the processing for the second packet from the computation table or the result of execution of the processing held in the parallel processing module according to the received notice of assignment. The determined parallel processing module executes the processing for the first packet using the result of execution of the processing for the second packet and the information included in the notice of assignment, and updates a computation table with a result of execution of the processing for the first packet.

Communication apparatus and communication method

Provided is a communication device including a plurality of physical ports, the communication device holding information for associating each of at least one logical port and at least two physical ports, the communication device being configured to: identify, when any one of the plurality of physical ports receives data including user data, one of the at least one logical port as an output destination of the data based on destination information included in the received data; select, based on the data, one of the at least two physical ports associated with the identified logical port as an destination of the data; generate coupling check data relating to one of the plurality of physical ports; transmit the coupling check data from the one of the plurality of physical ports; and transmit data including the user data from the physical port selected by a first processing unit as the output destination.

Communication device and method of controlling the same

An example of a data transport system includes transport nodes of a transport network, communication devices which communicate via the transport network, and a transport network logical path management server for setting logical paths between the transport nodes within the transport network, and a logical path control server. In a case where a first communication device is newly connected with a first transport node, the first communication device transmits control data to a logical path control server via the first transport node. The logical path control server obtains information about a connection relation between the newly connected first communication device and the first transport node from the control data, and establishes a logical path between the first communication device and a second communication device based on the obtained information about the connection relation and on information about logical paths between transport nodes in a logical path database.

Data transport system and control method of data transport system

A communication device includes a flow identification unit specifying a user corresponding to received data, a bandwidth control unit controlling transmission of the received data so as not to exceed a bandwidth corresponding to the selected communication path in two bandwidths allocated to the specified user, and a label addition unit adding the label value corresponding to the selected communication path to the data received from the bandwidth control unit and transmitting the data. The label addition unit executes, upon detecting a trigger for a change in the selection of the communication path, changing the selection of the label value and transmitting a feedback signal for giving notice of the change in the selection of the communication path to the bandwidth control unit in a given order. The bandwidth control unit executes a process of changing the setup of the bandwidth on the basis of the received feedback signal.

Communication device, method for controlling the communication device, and communication system

In an example of the invention, network devices are classified into areas. Each of the areas includes edge nodes. A network management apparatus retains fault information including values each indicating whether or not a fault has occurred in each of the areas, retains detour path information including values indicating edge nodes, values indicating alternative areas to the areas and priorities assigned to the alternative areas, identifies, when determined that a fault has occurred in a first area based on the fault information, an alternative area to the first area based on the detour path information, determines, when determined that the fault has not occurred in the identified alternative area, the identified alternative area as a second area through which the active path passes, determines two edge nodes included in the second area, and detect network devices through which the active path passes between the two edge nodes.

Communication system, communication method and network management apparatus

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Kokubunji, Japan

Masayuki Takase